CN106836019B - Adjustable large-scale component hanging apparatus for bridge strengthening repair - Google Patents

Abstract

The invention discloses an adjustable large component hoisting device for bridge reinforcement and maintenance, which includes a rigid support, a lifting mechanism and an angle fine-tuning mechanism, the rigid support is fixed on the bridge guardrail, and the lifting mechanism includes a lifting device, a steel cable and a load-bearing frame , the lifting equipment is fixed on the rigid support, the load-bearing frame is a symmetrical structure, and the steel cables connect the two sides of the load-bearing frame, the lifting equipment controls the lifting or lowering of the load-bearing frame by pulling the steel cables; the angle fine-tuning mechanism includes adjusting steel Cable and electric telescopic mechanism, the adjusting cable is set at the connection between the load-bearing frame and the lifting mechanism, and the electric telescopic mechanism is set on the regulating cable, by controlling the movement of the electric telescopic mechanism, the length of the regulating cable is adjusted to achieve The fine-tuning of the angle of the load-bearing frame can lift the rear parts of the bridge during the bridge construction and maintenance process, and perform precise angle fine-tuning to meet the needs of precise installation, and the hoisting is not restricted by space and site, and the maintenance cost is low.

Description

Adjustable large component hoisting device for bridge reinforcement and maintenance

technical field

The invention relates to the related technical field of bridge hoisting equipment, in particular to an adjustable large component hoisting device used for bridge reinforcement and maintenance.

Background technique

With the development of our country's economy, while a large number of bridges are being built in various places, there are also a large number of in-service bridges that need to be reinforced and repaired. In recent years, especially for the reinforcement and maintenance of long-span prestressed concrete box girder bridges, it is necessary not only to hoist a platform at the bottom of the box girder for workers to operate, but also to hoist new steel components and install them at the bottom of the box girder. Auxiliary to lifting gear. In engineering, the usual practice is to use cranes, gantry cranes and tower cranes to hoist them. However, these hoisting equipment is not only expensive to rent, but also has strict requirements on the working space and use site. On the other hand, during hoisting, it is often necessary to fine-tune the angle of the newly added steel components to meet the actual engineering installation angle requirements. However, traditional hoisting machinery does not have this function and cannot meet the installation requirements.

Therefore, considering the structural form of the long-span prestressed concrete box girder bridge itself, how to design a hoisting device for large-scale components that can realize fine-tuning of the angle of the hoisting components, free from space and site constraints, easy operation and low maintenance costs Problems that need to be solved urgently by those skilled in the art.

Contents of the invention

In order to solve the above problems, the present invention proposes an adjustable large-scale component hoisting device for bridge reinforcement and maintenance. In the process of bridge construction and maintenance, the present invention lifts the rear components of the bridge and performs precise angle fine-tuning to meet the precise It meets the needs of installation, and the hoisting is not restricted by space and site, easy to operate and low maintenance cost.

In order to achieve the above object, the present invention adopts the following technical solutions:

An adjustable large component hoisting device for bridge reinforcement and maintenance, including a rigid bracket, a lifting mechanism and an angle fine-tuning mechanism, and the rigid bracket is fixed on the bridge guardrail to provide support for hoisting;

The lifting mechanism includes a lifting device, a steel cable and a load-bearing frame. The lifting device is fixed on a rigid support. The load-bearing frame is a symmetrical structure, and the steel cables are connected to both sides of the load-bearing frame. cable to control the lifting or lowering action of the load-bearing frame;

The angle fine-tuning mechanism includes an adjusting cable and an electric telescopic mechanism, the adjusting cable is arranged at the connection between one side of the load-bearing frame and the lifting mechanism, and the electric telescopic mechanism is arranged on the adjusting cable, by controlling the electric telescopic mechanism Adjust the length of the cable to realize the fine-tuning of the angle of the load-bearing frame.

There are two sets of lifting devices, which are respectively arranged on the bridge guardrails on both sides of the bridge.

The rigid support includes a support body, a pulley and a fixed wheel. The support body is nested on the outside of the bridge guardrail, the fixed wheels are arranged on both sides inside the support body, and the pulley is arranged on the outside of the support body to fix the steel cables.

The direction of the fixed wheels is consistent with the extension direction of the bridge guardrail. Enables rigid supports to move along bridge parapets.

The rigid support has an additional length relative to the bridge guardrail, so that the lifting mechanism does not collide with the bridge guardrail when it rises.

The steel cables include a first steel cable, a second steel cable and a third steel cable, one end of the first steel cable is connected to the lifting device, the other end is provided with a fixing piece, and one end of the second steel cable and the third steel cable are connected The other end of the fixing piece is arranged on the load-bearing frame.

A pulley is arranged at the edge of the rigid support, the first steel cable is arranged on the pulley, and the lifting device pulls the first steel cable.

The load-bearing frame includes two L-shaped steel frames, the L-shaped steel frames are fixed together, and fixing pieces for fixing steel cables are arranged at the edges.

Hoisting equipment is common building equipment such as electric hoist, hoist, and fixed member is common fixed suspension device such as hook, chain, suspension ring, and electric telescopic mechanism is common equipment such as remote control electric hoist, and those skilled in the art can be on the basis of the present invention , to replace it with other equipment, all belong to the simple replacement that does not need to pay creative labor.

The beneficial effects of the present invention are: the present invention can lift the rear parts of the bridge in the process of bridge construction and maintenance, and perform precise angle fine-tuning to meet the needs of precise installation, and the hoisting is not restricted by space and site, and the operation is convenient and Low maintenance cost.

Description of drawings

Fig. 1 is the structural diagram of a kind of adjustable large component hoisting device that can be used for bridge reinforcement maintenance in the present invention

Fig. 2 is a steel frame structure diagram of the present invention

Fig. 3 is a diagram of the hoisting form of a large component of the present invention

Among them: 1. Rigid support, 11. Shaped steel rod, 12. Fixed wheel, 13. Pulley, 21. Electric hoist I, 22. Electric hoist II, 23. Hook, 24. Steel cable I, 25, Steel cable II; 31. Remote control electric hoist, 32, steel cable III, 33, steel cable IV, 34, steel cable V, 35, steel frame.

Detailed ways:

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1, the bridge spreader and the angle fine-tuning device are composed of a rigid support 1, a lifting system, and an angle fine-tuning system. Among them, the rigid support 1 is composed of a steel bar 11, a fixed wheel 12 and a pulley 13. The steel bar 11 is welded to form the skeleton of the rigid support 1. The fixed wheel 12 and the pulley 13 are fixed on the steel bar 11. Each side of the fixed wheel 6 for a total of 12, 3 for each side of the pulley for a total of 6. By adjusting the welding position and angle of the steel rod 11, the rigid support 1 can be nested just outside the bridge guardrail to ensure the stability of the device. The fixed wheel 12 is made of rubber, so that the rigid support 1 can be conveniently moved longitudinally along the bridge guardrail. The cantilever length of the cantilever rod of the rigid support can be adjusted to suit the lifting of different components. The pulley 13 is used to wind the steel cable and adjust the angle of the steel cable, so that the force of the rigid support 1 is more reasonable, so that the rigid support can be more firmly Nested on the bridge parapet and balances the bending moment on the bridge parapet by the hoisting member.

The lifting system is composed of electric hoist I 21, electric hoist II 22, hook 23, steel cable I 24, and steel cable II 25. A hook 23 is attached to the end of the steel cable I 24, and the other end is connected with the electric hoist I 21, and the electric hoist I 21 is fixed on the rigid support 1, and the steel cable II 25 is connected with the electric hoist II 22, and the electric hoist II 22 is fixed on the rigid support 1 above.

When the weight needs to be lifted, start the electric hoist I 21, the electric hoist I 21 can make the left side of the weight rise by pulling the steel cable I 24, similarly, the electric hoist II 22 can make the right side of the weight rise by pulling the steel cable II 25, By controlling the rising rate of the two electric hoists to be the same, it can ensure that both ends of the heavy object rise at the same rate, and realize the stable lifting of the heavy object.

As shown in Figure 3, the angle fine-tuning system includes a remote control electric hoist 31, a steel cable III 32, a steel cable IV 33, a steel cable V34, a steel frame 35, and the steel frame 35 is composed of two L-shaped steels, and the L-shaped steels are connected together by bolts , can be disassembled to facilitate the use on the construction site. There are lifting rings welded on the corners of the L-shaped steel. The steel cables III 32 and V 34 fix the steel frame 35 through the lifting rings. The remote control electric hoist 31 is attached to the steel cables IV 33. Steel cable III 32, steel cable IV 33, steel cable V 34 are connected together with steel frame 35, and steel cable III 32 and steel cable V34 hang steel frame 35, and steel frame 35 is used for fixing heavy objects, and by remote control electric hoist 31 , the steel cable IV 33 can be stretched and loosened. At this time, the lengths of the steel cable III 32 and the steel cable V 34 remain unchanged. Because of the scaling of the steel cable IV 33, one side of the steel frame 35 will be raised or lowered, while The height of the other side remains unchanged, and then the steel frame is rotated at an angle of 35 to ensure that the stretching rate of the remote control electric hoist on both sides is the same, so that the fine adjustment of the weight angle can be realized, and when the appropriate angle is reached, the stretching of the remote control electric hoist 31 is stopped , You can realize the stability of heavy objects and carry out construction activities.

When the section of the heavy object is regular (such as a rectangle) and no angle fine-tuning is required during construction, the position of the steel frame 35 connected to the steel cable III32 and the steel cable V 34 can be adjusted to directly lift, so as to bring into play the lifting function of the device conveniently.

Although the specific implementation of the present invention has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the present invention. Those skilled in the art should understand that on the basis of the technical solution of the present invention, those skilled in the art do not need to pay creative work Various modifications or variations that can be made are still within the protection scope of the present invention.

Claims (9)

1. a kind of adjustable large-scale component hanging apparatus for bridge strengthening repair, it is characterized in that：Including rigid support, promoted Mechanism and angle fine-adjustment mechanism, the rigid support are fixed on Bridge guardrail, and support is provided for lifting；

The hoisting mechanism includes lifting equipment, cable wire and bearing frame, and the lifting equipment is fixed on rigid support, described to hold Weight frame is symmetrical structure, and cable wire connects the both sides of bearing frame, and lifting equipment is by pulling cable wire to control the promotion of bearing frame Or lowering action；

The angle fine-adjustment mechanism, including adjusting cable wire and electric expansion mechanism, the adjusting cable wire are set to bearing frame side With the junction of hoisting mechanism, the electric expansion mechanism, which is set to, to be adjusted on cable wire, by the fortune for controlling electric expansion mechanism Dynamic, adjustment adjusts the length of cable wire, to realize the fine tuning to the angle of bearing frame；

The hanging apparatus is two sets, is respectively arranged on the both sides Bridge guardrail of bridge；

The lifting equipment of two sets of hanging apparatus is fixedly installed on the rigid support of the same side Bridge guardrail.

2. a kind of adjustable large-scale component hanging apparatus for bridge strengthening repair as described in claim 1, it is characterized in that： The rigid support, including rack body, pulley and fast pulley, the rack body are nested on the outside of Bridge guardrail, fast pulley Both sides inside rack body are set to, the pulley is set on the outside of rack body, with fixing tightwire.

3. a kind of adjustable large-scale component hanging apparatus for bridge strengthening repair as claimed in claim 2, it is characterized in that： The direction of the fast pulley is consistent with the extension direction of Bridge guardrail.

4. a kind of adjustable large-scale component hanging apparatus for bridge strengthening repair as described in claim 1, it is characterized in that： The rigid support has an additional length relative to Bridge guardrail, is not touched with Bridge guardrail when hoisting mechanism being made to increase It hits.

5. a kind of adjustable large-scale component hanging apparatus for bridge strengthening repair as described in claim 1, it is characterized in that： The cable wire includes the first cable wire, the second cable wire and third cable wire, and first cable wire one end connects lifting equipment, and the other end is set It is equipped with fixing piece, the second cable wire and third cable wire one end connection fixture, the other end are set on bearing frame.

6. a kind of adjustable large-scale component hanging apparatus for bridge strengthening repair as claimed in claim 5, it is characterized in that： The rigid support edge is provided with a pulley, and the first cable wire is set on pulley, and lifting equipment pulls the first cable wire.

7. a kind of adjustable large-scale component hanging apparatus for bridge strengthening repair as described in claim 1, it is characterized in that： The bearing frame includes two L-type steel framves, and the L-type steel frame is fixed together, and edge is provided with the fixation of fixing tightwire Part.

8. a kind of adjustable large-scale component hanging apparatus for bridge strengthening repair as described in claim 1, it is characterized in that： Lifting equipment is electric block or elevator.

9. a kind of adjustable large-scale component hanging apparatus for bridge strengthening repair as described in claim 5 or 7, feature It is：Fixing piece is hook or hanging ring.